6T50 Overhaul Kit 2006-2013, new and ready to install. Fits the 6T50. Ships fast from the USA.
If you have a 6T50 (or a 6T40 or 6T45) apart on the bench and need every seal, gasket and O-ring to put it back together, this is the soft-parts overhaul kit cataloged for 2006 through 2013 units. That span covers both the first-generation design and the 2012-2013 Gen 2 update, which is why this kit is the one to grab when you are rebuilding a used core and are not yet sure which generation you have. It is built in the Precision International KP52900ZAX pattern: the X suffix means it ships without bonded pistons, retainers or the balancer, so you reuse yours or add a piston set separately.
The 6T50 is the higher-torque member of GM's front-drive 6T40 family. Every clutch in it (1-2-3-4, 3-5-R, 4-5-6, 2-6 and low/reverse) is applied by fluid pressure routed through the case, the pump and the valve body. Those circuits only hold pressure if the gaskets between the valve body, spacer plate and case are flat and intact, and if the sealing rings and O-rings on the shafts and solenoids are fresh. After high mileage and heat, those rubber and paper parts take a set, and pressure leaks off before it reaches the piston. This kit replaces that whole layer. Per the kit bulletin, it carries both the 6T40 and the 6T45/6T50 valve body gaskets, check balls, color-coded solenoid O-rings, the valve-body-to-case seals and a solenoid screen, along with the pan gasket and metal-clad seals.
A seal kit is for a transmission that is already coming apart. If the unit still drives, check fluid level and condition first and scan for codes. Our 6T40 delayed engagement guide walks through the pressure and fluid checks that separate a leak from a hard-part failure, and the wave plate failure write-up covers the most common reason these cases get opened. If a shop has quoted the job, our 6T40 rebuild cost breakdown shows where a seal kit fits in the total.
This kit is listed for 2006-2013 6T40, 6T45 and 6T50 front-drive and all-wheel-drive units. GM applications on the kit bulletin include the Chevrolet Malibu, Equinox, Captiva Sport and Cruze, GMC Terrain, Buick LaCrosse, Regal and Verano, and Pontiac G6, among others; check your RPO code on the glovebox label (MHK and MHJ for the 6T50, MH7 for the 6T45) to confirm the family. The 2012 changeover to Gen 2 altered the 4-5-6 clutch and removed the pressure switches from the control solenoid body, and some gaskets differ by generation, which is why the kit includes both patterns. Lay each old gasket over the new one before you install it. For 2014-up Gen 3 units this is not the right kit. If you are unsure, send us your year and VIN before ordering. You can also browse the full list of rebuild kits.
| Fits | 6T50 2006-2013 |
| Part type | Overhaul Kit |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
No. This is the KP52900ZAX-pattern kit, and the X means no bonded pistons, retainers or balancer. Reuse good pistons or buy a bonded piston set if any are cracked or swollen.
Yes. The kit is cataloged for 2006-2013 and carries the gaskets for both the Gen 1 and Gen 2 patterns. It does not fit 2014-up Gen 3 units.
Yes. The 6T40, 6T45 and 6T50 share the case family and this kit includes both the 6T40 and the 6T45/6T50 valve body gaskets. Match each gasket to the old one before installing.
No. It is the seal, gasket, O-ring and check ball layer of the rebuild. Add frictions, steels and a filter, or choose a master rebuild kit if the clutches are worn.
DEXRON VI, the factory fill for this transmission family. Prelube the seals with the same fluid, then check the level hot at the check plug after the relearn drive.
